Who said "The focus and directrix determine all conic forms."?

This quote is attributed to Euclid.

The focus and directrix determine all conic forms. - Euclid

"The focus and directrix determine all conic forms."

Euclid

Mathematician Greek -325–-265

"The laws of nature are but the mathematical thoughts of God."

"There is no royal road to geometry."

"What is even more aggravating than a sigmoid journey through a circle is the sheer tedium of squaring it."

"Points, lines, and planes are the foundation of all that we see."